LG GH24NS, Vertical/Horizontal, Serial ATA, 48x, 24x, 32x, 48x LG GH24NS. Mounting: Vertical/Horizontal. Interface: Serial ATA. CD write speed: 48x, DVD+R write speed: 24x, CD rewrite speed: 32x. CD read speed: 48x, CD-R read speed: 48x, CD-RW read speed: 48x. DVD drive average random access time: 145 ms, CD-ROM drive average random access time: 125 ms